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Angiomatous meningioma: a diagnostic dilemma
Shalinee Rao1, Aarthi Rajkumar, Sarah Kuruvilla
1Department of Pathology, Sri Ramachandra Medical College and Research Institute, Porur, Chennai, Tamil Nadu, India.
Abstract:
Angiomatous meningioma accounts for 2.1% of all meningiomas. It has features of a typical benign meningioma with many small or large vascular channels which may predominate over its meningothelial elements. We present here a series of three cases of angiomatous meningioma, which posed diagnostic difficulty to clinicians, radiologists, and pathologists. All the three cases showed a tumor entirely composed of thin-walled vascular channels and cells with bland morphology in the background. The diagnosis was confirmed by immunohistochemistry. We present series of three cases to highlight the histomorphological features of this uncommon variant of meningioma that could help in distinguishing it from hemangioblastoma and hemangiopericytoma.
Insights
Angiomatous meningioma, a rare tumor, presents diagnostic challenges due to its vascular nature. This study highlights key features to differentiate it from similar conditions like hemangioblastoma.
Area of Science:
- Neuropathology
- Neurosurgery
- Oncology
Background:
- Angiomatous meningioma is a rare variant, comprising 2.1% of all meningiomas.
- Characterized by prominent vascular channels that can obscure meningothelial elements.
- Often poses diagnostic challenges for medical professionals.
Observation:
- Presents three cases of angiomatous meningioma.
- Tumors showed extensive thin-walled vascular channels with bland cellular morphology.
- Histomorphological features mimicked other vascular tumors.
Findings:
- Histopathological examination revealed a predominantly vascular structure.
- Immunohistochemistry confirmed the diagnosis of angiomatous meningioma.
- Distinct features were identified to differentiate from hemangioblastoma and hemangiopericytoma.
Implications:
- Understanding these features is crucial for accurate diagnosis.
- Aids in distinguishing angiomatous meningioma from other vascular tumors.
- Improves diagnostic accuracy in neuro-oncology and neuropathology.
